Operating Instructions VLT AutomationDrive FC 301/302 0.25 ......VLT® is a registered trademark. 1.2 Additional Resources Other resources are available to understand advanced frequency

MAKING MODERN LIVING POSSIBLE

Operating InstructionsVLT® AutomationDrive FC 301/3020.25-75 kW

vlt-drives.danfoss.com

http://vlt-drives.danfoss.com

Contents

1 Introduction 41.1 Purpose of the Manual 4

1.2 Additional Resources 4

1.3 Document and Software Version 4

1.4 Product Overview 4

1.5 Approvals and Certifications 7

1.6 Disposal 7

2 Safety 82.1 Safety Symbols 8

2.2 Qualified Personnel 8

2.3 Safety Precautions 8

3 Mechanical Installation 103.1 Unpacking 10

3.1.1 Items Supplied 10

3.2 Installation Environments 10

3.3 Mounting 11

4 Electrical Installation 134.1 Safety Instructions 13

4.2 EMC-compliant Installation 13

4.3 Grounding 13

4.4 Wiring Schematic 14

4.5 Access 16

4.6 Motor Connection 16

4.7 AC Mains Connection 17

4.8 Control Wiring 17

4.8.1 Control Terminal Types 17

4.8.2 Wiring to Control Terminals 19

4.8.3 Enabling Motor Operation (Terminal 27) 19

4.8.4 Voltage/Current Input Selection (Switches) 19

4.8.5 Mechanical Brake Control 20

4.8.6 RS485 Serial Communication 20

4.9 Installation Check List 21

5 Commissioning 225.1 Safety Instructions 22

5.2 Applying Power 22

5.3 Local Control Panel Operation 22

Contents Operating Instructions

MG33AQ02 Danfoss A/S © 07/2015 All rights reserved. 1

5.3.1 Graphic Local Control Panel Layout 22

5.3.2 Parameter Settings 24

5.3.3 Uploading/Downloading Data to/from the LCP 24

5.3.4 Changing Parameter Settings 24

5.3.5 Restoring Default Settings 24

5.4 Basic Programming 25

5.4.1 Commissioning with SmartStart 25

5.4.2 Commissioning via [Main Menu] 25

5.4.3 Asynchronous Motor Set-up 26

5.4.4 PM Motor Set-up 27

5.4.5 SynRM Motor Set-up with VVC+ 28

5.4.6 Automatic Motor Adaptation (AMA) 29

5.5 Checking Motor Rotation 29

5.6 Checking Encoder Rotation 29

5.7 Local-control Test 29

5.8 System Start-up 30

6 Application Set-up Examples 31

7 Maintenance, Diagnostics, and Troubleshooting 377.1 Maintenance and Service 37

7.2 Status Messages 37

7.3 Warning and Alarm Types 39

7.4 List of Warnings and Alarms 40

7.5 Troubleshooting 47

8 Specifications 508.1 Electrical Data 50

8.1.1 Mains Supply 200–240 V 50

8.1.2 Mains Supply 380–500 V 52

8.1.3 Mains Supply 525–600 V (FC 302 only) 55

8.1.4 Mains Supply 525–690 V (FC 302 only) 58

8.2 Mains Supply 60

8.3 Motor Output and Motor Data 60

8.4 Ambient Conditions 61

8.5 Cable Specifications 61

8.6 Control Input/Output and Control Data 61

8.7 Fuses and Circuit Breakers 65

8.8 Connection Tightening Torques 71

8.9 Power Ratings, Weight, and Dimensions 72

9 Appendix 73

Contents VLT® AutomationDrive FC 301/302

2 Danfoss A/S © 07/2015 All rights reserved. MG33AQ02

9.1 Symbols, Abbreviations, and Conventions 73

9.2 Parameter Menu Structure 73

Index 79

Contents Operating Instructions


1 Introduction

1.1 Purpose of the Manual

These operating instructions provide information for safeinstallation and commissioning of the frequency converter.

The operating instructions are intended for use byqualified personnel.Read and follow the operating instructions to use thefrequency converter safely and professionally, and payparticular attention to the safety instructions and generalwarnings. Always keep these operating instructionsavailable with the frequency converter.

VLT® is a registered trademark.

1.2 Additional Resources

Other resources are available to understand advancedfrequency converter functions and programming.

• The VLT® AutomationDrive FC 301/FC 302Programming Guide provides greater detail onworking with parameters and many applicationexamples.

• The VLT® AutomationDrive FC 301/FC 302 DesignGuide provides detailed information aboutcapabilities and functionality to design motorcontrol systems.

• Instructions for operation with optionalequipment.

Supplementary publications and manuals are availablefrom Danfoss. See vlt-drives.danfoss.com/Support/Technical-Documentation/ for listings.

1.3 Document and Software Version

This manual is regularly reviewed and updated. Allsuggestions for improvement are welcome. Table 1.1 showsthe manual version and the corresponding softwareversion.

Edition Remarks Software version

MG33AQxx Replaces MG33APxx 7.XX

Table 1.1 Manual and Software Version

1.4 Product Overview

1.4.1 Intended Use

The frequency converter is an electronic motor controllerintended for:

• Regulation of motor speed in response to systemfeedback or to remote commands from externalcontrollers. A power drive system consists of thefrequency converter, the motor, and equipmentdriven by the motor.

• System and motor status surveillance.The frequency converter can also be used for motorprotection.

Depending on the configuration, the frequency convertercan be used in standalone applications or form part of alarger appliance or installation.

The frequency converter is allowed for use in residential,industrial, and commercial environments in accordancewith local laws and standards.

NOTICEIn a residential environment, this product can causeradio interference, in which case supplementarymitigation measures can be required.

Foreseeable misuseDo not use the frequency converter in applications whichare non-compliant with specified operating conditions andenvironments. Ensure compliance with the conditionsspecified in chapter 8 Specifications.

Introduction VLT® AutomationDrive FC 301/302


11

http://vlt-drives.danfoss.com/Support/Technical-Documentation/http://vlt-drives.danfoss.com/Support/Technical-Documentation/

1.4.2 Exploded Views

1

2

3

4

5

6

7

8

9

10

11

12 13

1617

1819

1415

FAN MOUNTING

QDF-30

DC- DC+

Remove jumper to activate Safe StopMax. 24 Volt !

12 13 18 19 27 29 32 33 20

61 6839 42 50 53 54

0605

0403

0201

130B

B493

.10

1 Local control panel (LCP) 11 Relay 2 (04, 05, 06)

2 Cover 12 Lifting ring

3 RS485 fieldbus connector 13 Mounting slot

4 Digital I/O and 24 V supply 14 Grounding clamp (PE)

5 Analog I/O connector 15 Cable screen connector

6 Cable screen connector 16 Brake terminal (-81, +82)

7 USB connector 17 Load sharing terminal (DC bus) (-88, +89)

8 Fieldbus terminal switch 18 Motor output terminals 96 (U), 97 (V), 98 (W)

9 Analog switches (A53), (A54) 19 Mains input terminals 91 (L1), 92 (L2), 93 (L3)

10 Relay 1 (01, 02, 03) – –

Illustration 1.1 Exploded View Enclosure Sizes B and C, IP55 and IP66

Introduction Operating Instructions


1 1

1

23

4

5

6

7

8

9

10

11

1213

14

8

15

16

17

18

130B

B492

.10

1 Local control panel (LCP) 10 Motor output terminals 96 (U), 97 (V), 98 (W)

2 RS485 fieldbus connector (+68, -69) 11 Relay 2 (01, 02, 03)

3 Analog I/O connector 12 Relay 1 (04, 05, 06)

4 LCP input plug 13 Brake (-81, +82) and load sharing (-88, +89) terminals

5 Analog switches (A53), (A54) 14 Mains input terminals 91 (L1), 92 (L2), 93 (L3)

6 Cable screen connector 15 USB connector

7 Ground termination plate 16 Fieldbus terminal switch

8 Grounding clamp (PE) 17 Digital I/O and 24 V supply

9 Screened cable grounding clamp and strain relief 18 Cover

Illustration 1.2 Exploded View Enclosure Size A, IP20

Introduction VLT® AutomationDrive FC 301/302


11

1.4.3 Block Diagram of the FrequencyConverter

Illustration 1.3 is a block diagram of the internalcomponents of the frequency converter. See Table 1.2 fortheir functions.

Area Title Functions

1 Mains input3-phase AC mains supply to thefrequency converter.

2 RectifierThe rectifier bridge converts theAC input to DC current to supplyinverter power.

3 DC busIntermediate DC-bus circuithandles the DC current.

4 DC reactors

• Filter the intermediate DCcircuit voltage.

• Provide mains transientprotection.

• Reduce RMS current.• Raise the power factor

reflected back to the line.

• Reduce harmonics on the ACinput.

5 Capacitor bank

• Stores the DC power.• Provides ride-through

protection for short powerlosses.

6 Inverter

The inverter converts the DC intoa controlled PWM AC waveformfor a controlled variable output tothe motor.

7 Output to motorRegulated 3-phase output powerto the motor.

Area Title Functions

8 Control circuitry

• Input power, internalprocessing, output, and motorcurrent are monitored toprovide efficient operationand control.

• User interface and externalcommands are monitored andperformed.

• Status output and control canbe provided.

Illustration 1.3 Frequency Converter Block Diagram

1.4.4 Enclosure Sizes and Power Ratings

For enclosure sizes and power ratings of the frequencyconverters, refer to chapter 8.9 Power Ratings, Weight, andDimensions.

1.5 Approvals and Certifications

More approvals and certifications are available. Contact thelocal Danfoss partner. Frequency converters of enclosuresize T7 (525–690 V) are UL certified for only 525–600 V.

The frequency converter complies with UL 508C thermalmemory retention requirements. For more information,refer to the section Motor Thermal Protection in theproduct-specific design guide.

For compliance with the European Agreement concerningInternational Carriage of Dangerous Goods by InlandWaterways (ADN), refer to ADN-compliant Installation in theproduct-specific design guide.

1.6 Disposal

Do not dispose of equipment containingelectrical components together withdomestic waste.Collect it separately in accordance withlocal and currently valid legislation.

Introduction Operating Instructions


1 1

2 Safety

2.1 Safety Symbols

The following symbols are used in this manual:

WARNINGIndicates a potentially hazardous situation that couldresult in death or serious injury.

CAUTIONIndicates a potentially hazardous situation that couldresult in minor or moderate injury. It can also be used toalert against unsafe practices.

NOTICEIndicates important information, including situations thatcan result in damage to equipment or property.

2.2 Qualified Personnel

Correct and reliable transport, storage, installation,operation, and maintenance are required for the trouble-free and safe operation of the frequency converter. Onlyqualified personnel are allowed to install and operate thisequipment.

Qualified personnel are defined as trained staff, who areauthorised to install, commission, and maintain equipment,systems, and circuits in accordance with pertinent laws andregulations. Additionally, the qualified personnel must befamiliar with the instructions and safety measuresdescribed in these operating instructions.

2.3 Safety Precautions

WARNINGHIGH VOLTAGEFrequency converters contain high voltage whenconnected to AC mains input, DC supply, or load sharing.Failure to perform installation, start-up, and maintenanceby qualified personnel can result in death or seriousinjury.

• Only qualified personnel must perform instal-lation, start-up, and maintenance.

WARNINGUNINTENDED STARTWhen the frequency converter is connected to AC mains,DC supply, or load sharing, the motor may start at anytime. Unintended start during programming, service, orrepair work can result in death, serious injury, orproperty damage. The motor can start via an externalswitch, a fieldbus command, an input reference signalfrom the LCP, or after a cleared fault condition.To prevent unintended motor start:

• Disconnect the frequency converter from themains.

• Press [Off/Reset] on the LCP beforeprogramming parameters.

• Completely wire and assemble the frequencyconverter, motor, and any driven equipmentbefore connecting the frequency converter toAC mains, DC supply, or load sharing.

WARNINGDISCHARGE TIMEThe frequency converter contains DC-link capacitors,which can remain charged even when the frequencyconverter is not powered. High voltage can be presenteven when the warning indicator lights are off. Failure towait the specified time after power has been removedbefore performing service or repair work, could result indeath or serious injury.

1. Stop the motor.

2. Disconnect AC mains, permanent magnet typemotors, and remote DC-link power supplies,including battery back-ups, UPS, and DC-linkconnections to other frequency converters.

3. Wait for the capacitors to discharge fully, beforeperforming any service or repair work. Theduration of waiting time is specified in Table 2.1.

Safety VLT® AutomationDrive FC 301/302


22

Voltage [V] Minimum waiting time (minutes)

4 7 15

200–240 0.25–3.7 kW(0.34–5 hp)

– 5.5–37 kW(7.5–50 hp)

380–500 0.25–7.5 kW(0.34–10 hp)

– 11–75 kW(15–100 hp)

525–600 0.75–7.5 kW(1–10 hp)

– 11–75 kW(15–100 hp)

525–690 – 1.5–7.5 kW(2–10 hp)

11–75 kW(15–100 hp)

Table 2.1 Discharge Time

WARNINGLEAKAGE CURRENT HAZARDLeakage currents exceed 3.5 mA. Failure to groundfrequency converter properly can result in death orserious injury.

• Ensure the correct grounding of the equipmentby a certified electrical installer.

WARNINGEQUIPMENT HAZARDContact with rotating shafts and electrical equipmentcan result in death or serious injury.

• Ensure that only trained and qualified personnelperform installation, start-up, and maintenance.

• Ensure that electrical work conforms to nationaland local electrical codes.

• Follow the procedures in this manual.

WARNINGUNINTENDED MOTOR ROTATIONWINDMILLINGUnintended rotation of permanent magnet motorscreates voltage and can charge the unit, resulting indeath, serious injury, or equipment damage.

• Ensure that permanent magnet motors areblocked to prevent unintended rotation.

CAUTIONINTERNAL FAILURE HAZARDAn internal failure in the frequency converter can resultin serious injury, when the frequency converter is notproperly closed.

• Ensure that all safety covers are in place andsecurely fastened before applying power.

Safety Operating Instructions


2 2

3 Mechanical Installation

3.1 Unpacking

3.1.1 Items Supplied

Items supplied may vary according to product configu-ration.

• Make sure that the items supplied and theinformation on the nameplate correspond to theorder confirmation.

• Check the packaging and the frequency convertervisually for damage caused by inappropriatehandling during shipment. File any claim fordamage with the carrier. Retain damaged partsfor clarification.

130B

D60

0.10

CHASSIS/ IP20 Tamb.50 C/122 F

VLT

MADE IN DENMARK

R

P/N: 131X3537 S/N: 010122G430

0.37kW/ 0.50HP

IN: 3x200-240V 50/60Hz 2.2A

OUT: 3x0-Vin 0-1000Hz 2.4Ao

CAUTION:See manual for special condition/mains fusevoir manual de conditions speclales/fusibles

WARNING:Stored charge, wait 4 min.Charge residuelle, attendez 4 min.

* 1 3 1 X 3 5 3 7 0 1 0 1 2 2 G 4 3 0 *

`

Automation Drivewww.danfoss.com

T/C: FC-302PK37T2E20H1BGXXXXSXXXXA6BKC4XXXD0

Listed 76X1 E134261 Ind. Contr. Eq.

o

`

12

4

5

6

7 8

9

10

3

1 Type code

2 Code number

3 Serial number

4 Power rating

5Input voltage, frequency, and current (at low/highvoltages)

6Output voltage, frequency, and current (at low/highvoltages)

7 Enclosure type and IP rating

8 Maximum ambient temperature

9 Certifications

10 Discharge time (Warning)

Illustration 3.1 Product Nameplate (Example)

NOTICEDo not remove the nameplate from the frequencyconverter (loss of warranty).

3.1.2 Storage

Ensure that the requirements for storage are fulfilled. Referto chapter 8.4 Ambient Conditions for further details.

3.2 Installation Environments

NOTICEIn environments with airborne liquids, particles, orcorrosive gases, ensure that the IP/type rating of theequipment matches the installation environment. Failureto meet requirements for ambient conditions can reducethe lifetime of the frequency converter. Ensure thatrequirements for air humidity, temperature, and altitudeare met.

Vibration and shockThe frequency converter complies with requirements forunits mounted on the walls and floors of productionpremises, as well as in panels bolted to walls or floors.

For detailed ambient conditions specifications, refer to chapter 8.4 Ambient Conditions.

Mechanical Installation VLT® AutomationDrive FC 301/302


33

3.3 Mounting

NOTICEImproper mounting can result in overheating andreduced performance.

Cooling

• Ensure that top and bottom clearance for aircooling is provided. See Illustration 3.2 forclearance requirements.

a

a

130B

D52

8.10

Illustration 3.2 Top and Bottom Cooling Clearance

Enclosure A1–A5 B1–B4 C1, C3 C2, C4

a [mm] 100 200 200 225

Table 3.1 Minimum Airflow Clearance Requirements

Lifting

• To determine a safe lifting method, check theweight of the unit, see chapter 8.9 Power Ratings,Weight, and Dimensions.

• Ensure that the lifting device is suitable for thetask.

• If necessary, plan for a hoist, crane, or forklift withthe appropriate rating to move the unit.

• For lifting, use hoist rings on the unit, whenprovided.

Mounting

1. Ensure that the strength of the mounting locationsupports the unit weight. The frequencyconverter allows side-by-side installation.

2. Locate the unit as near to the motor as possible.Keep the motor cables as short as possible.

3. Mount the unit vertically to a solid flat surface orto the optional mounting plate to provide coolingairflow.

4. Use the slotted mounting holes on the unit forwall mount, when provided.

Mounting with mounting plate and railings

130B

D50

4.10

Illustration 3.3 Proper Mounting with Mounting Plate

NOTICEMounting plate is required when mounted on railings.

C

a

b

130B

A64

8.12

f

e

B

A

a

d

e

b

c

Illustration 3.4 Top and Bottom Mounting Holes (See chapter 8.9 Power Ratings, Weight, and Dimensions)

Mechanical Installation Operating Instructions


3 3

a

e

f

130B

A71

5.12

Illustration 3.5 Top and Bottom Mounting Holes (B4, C3, andC4)

Mechanical Installation VLT® AutomationDrive FC 301/302


33

4 Electrical Installation

4.1 Safety Instructions

See chapter 2 Safety for general safety instructions.

WARNINGINDUCED VOLTAGEInduced voltage from output motor cables that runtogether can charge equipment capacitors, even with theequipment turned off and locked out. Failure to runoutput motor cables separately or to use screened cablescould result in death or serious injury.

• Run output motor cables separately, or• Use screened cables.

CAUTIONSHOCK HAZARDThe frequency converter can cause a DC current in thePE conductor. Failure to follow the recommendation maylead to the RCD not providing the intended protection.

• When a residual current-operated protectivedevice (RCD) is used for protection againstelectrical shock, only an RCD of Type B ispermitted on the supply side.

Overcurrent protection

• Extra protective equipment, such as short-circuitprotection or motor thermal protection betweenfrequency converter and motor, is required forapplications with multiple motors.

• Input fusing is required to provide short circuitand overcurrent protection. If not factory-supplied, the installer must provide fuses. Seemaximum fuse ratings in chapter 8.7 Fuses andCircuit Breakers.

Wire type and ratings

• All wiring must comply with local and nationalregulations regarding cross-section and ambienttemperature requirements.

• Power connection wire recommendation:Minimum 75 °C rated copper wire.

See chapter 8.1 Electrical Data and chapter 8.5 Cable Specifi-cations for recommended wire sizes and types.

4.2 EMC-compliant Installation

To obtain an EMC-compliant installation, follow theinstructions provided in chapter 4.3 Grounding, chapter 4.4 Wiring Schematic, chapter 4.6 Motor Connection,and chapter 4.8 Control Wiring.

4.3 Grounding

WARNINGLEAKAGE CURRENT HAZARDLeakage currents exceed 3.5 mA. Failure to ground thefrequency converter properly could result in death orserious injury.

• Ensure the correct grounding of the equipmentby a certified electrical installer.

For electrical safety

• Ground the frequency converter in accordancewith applicable standards and directives.

• Use a dedicated ground wire for input power,motor power, and control wiring.

• Do not ground one frequency converter toanother in a daisy chain fashion.

• Keep the ground wire connections as short aspossible.

• Follow motor manufacturer wiring requirements.• Minimum cable cross-section: 10 mm2 (7 AWG)

(or 2 rated ground wires terminated separately).

For EMC-compliant installation

• Establish electrical contact between the cablescreen and the frequency converter enclosure byusing metal cable glands or by using the clampsprovided on the equipment (see chapter 4.6 MotorConnection).

• Use high-strand wire to reduce electricalinterference.

• Do not use pigtails.NOTICEPOTENTIAL EQUALISATIONRisk of electrical interference, when the ground potentialbetween the frequency converter and the control systemis different. Install equalising cables between the systemcomponents. Recommended cable cross-section: 16 mm2

(5 AWG).

Electrical Installation Operating Instructions


4 4

4.4 Wiring Schematic

130B

D59

9.11

3-phase

–

power

–

input

DC bus Switch ModePower Supply

Motor

Analog Output

Interface

relay1

relay21)

ON=TerminatedOFF=Open

Brakeresistor

91 (L1)92 (L2)93 (L3)

PE

88 (-)89 (+)

50 (+10 V OUT)

53 (A IN)

54 (A IN)

55 (COM A IN)0/4–20 mA

12 (+24 V OUT)

13 (+24 V OUT)

37 (D IN)1)

18 (D IN)

20 (COM D IN)

10 V DC15 mA 130/200 mA

+ - + -

(U) 96(V) 97(W) 98(PE) 99

(COM A OUT) 39

(A OUT) 42

(P RS485) 68

(N RS485) 69

(COM RS485) 612)

0 V

5V

S801

0/4–20 mA

RS-485RS-485

03

+10 V DC0/-10 V DC–

+10 V DC

+10 V DC0/4–20 mA

0/-10 V DC–

240 V AC, 2 A

24 V DC

02

01

05

04

06

24 V (NPN) 0 V (PNP)

0 V (PNP)24 V (NPN)

19 (D IN)

24 V (NPN) 0 V (PNP)27

24 V

0 V

(D IN/OUT)

0 V (PNP)24 V (NPN)

(D IN/OUT)1)

0 V

24 V29

24 V (NPN) 0 V (PNP)

0 V (PNP)24 V (NPN)

33 (D IN)

32 (D IN)

12

ON

S201

ON2

1S202ON=0/4–20 mAOFF=0/-10 V DC– +10 V DC

95

P 5-00

21 O

N

S801

(R+) 82

(R-) 81

: Chassis

240 V AC, 2 A

400 V AC, 2 A

: Ground

: Ground 1

: Ground 2

: PE

Illustration 4.1 Basic Wiring Schematic

A=Analog, D=Digital1) Terminal 37 (optional) is used for Safe Torque Off (STO). For installation instructions, refer to the VLT® Safe Torque OffOperating Instructions. Terminal 37 is not included in FC 301 (except enclosure type A1). Relay 2 and terminal 29 have nofunction in FC 301.2) Do not connect cable screen.

Electrical Installation VLT® AutomationDrive FC 301/302


44

130B

D52

9.12

1

2

3

4

5

6

7

8

9

L1L2L3PE

10 11 PE

u

v

w

1 PLC 7 Motor, 3-phase and PE (screened)

2 Frequency converter 8 Mains, 3-phase and reinforced PE (not screened)

3 Output contactor 9 Control wiring (screened)

4 Cable clamp 10 Potential equalisation minimum 16 mm2 (0.025 in2)

5 Cable insulation (stripped)11

Clearance between control cable, motor cable and mains cable:Minimum 200 mm (7.9 in)6 Cable gland

Illustration 4.2 EMC-compliant Electrical Connection

For more information about EMC, see chapter 4.2 EMC-compliant Installation



4 4

NOTICEEMC INTERFERENCEUse screened cables for motor and control wiring, andseparate cables for input power, motor wiring, andcontrol wiring. Failure to isolate power, motor, andcontrol cables can result in unintended behaviour orreduced performance. Minimum 200 mm (7.9 in)clearance between power, motor, and control cables isrequired.

4.5 Access

• Remove the cover with a screwdriver (seeIllustration 4.3) or by loosening attaching screws(see Illustration 4.4).

130B

T248

.10

Illustration 4.3 Access to Wiring for IP20 and IP21 Enclosures

130B

T334

.10

Illustration 4.4 Access to Wiring for IP55 and IP66 Enclosures

Tighten the cover screws using the tightening torquesspecified in Table 4.1.

Enclosure IP55 IP66

A4/A5 2 2

B1/B2 2.2 2.2

C1/C2 2.2 2.2

No screws to tighten for A1/A2/A3/B3/B4/C3/C4.

Table 4.1 Tightening Torques for Covers [Nm]

4.6 Motor Connection

WARNINGINDUCED VOLTAGEInduced voltage from output motor cables that runtogether can charge equipment capacitors, even with theequipment turned off and locked out. Failure to runoutput motor cables separately or use screened cablescould result in death or serious injury.

• Run output motor cables separately, or• Use screened cables.• Comply with local and national electrical codes

for cable sizes. For maximum wire sizes, seechapter 8.1 Electrical Data.

• Follow motor manufacturer wiring requirements.• Motor wiring knockouts or access panels are

provided at the base of IP21 (NEMA1/12) andhigher units.

• Do not wire a starting or pole-changing device(for example, Dahlander motor or slip ringasynchronous motor) between the frequencyconverter and the motor.

Procedure

1. Strip a section of the outer cable insulation.

2. Position the stripped wire under the cable clampto establish mechanical fixation and electricalcontact between the cable screen and ground.

3. Connect the ground wire to the nearestgrounding terminal in accordance with thegrounding instructions provided inchapter 4.3 Grounding, see Illustration 4.5.

4. Connect the 3-phase motor wiring to terminals96 (U), 97 (V), and 98 (W), see Illustration 4.5.

5. Tighten the terminals in accordance with theinformation provided in chapter 8.8 ConnectionTightening Torques.



44

130B

D53

1.10

UV

W

9697

98

Illustration 4.5 Motor Connection

Illustration 4.6 shows mains input, motor, and groundingfor basic frequency converters. Actual configurations varywith unit types and optional equipment.

95

130B

B920

.10

+DC BR- B

MA

IN

S

L1 L2 L391 92 93

REL

AY

1

REL

AY

2

99

- LC -

U V W

MOTOR

99

Illustration 4.6 Example of Motor, Mains, and Ground Wiring

4.7 AC Mains Connection

• Size the wiring based on the input current of thefrequency converter. For maximum wire sizes, seechapter 8.1 Electrical Data.

• Comply with local and national electrical codesfor cable sizes.

Procedure

1. Connect the 3-phase AC input power wiring toterminals L1, L2, and L3 (see Illustration 4.6).

2. Depending on the configuration of theequipment, connect the input power to themains input terminals or the input disconnect.

3. Ground the cable in accordance with thegrounding instructions provided inchapter 4.3 Grounding.

4. When supplied from an isolated mains source (ITmains or floating delta) or TT/TN-S mains with agrounded leg (grounded delta), ensure thatparameter 14-50 RFI Filter is set to [0] Off to avoiddamage to the DC link and to reduce groundcapacity currents in accordance with IEC 61800-3.

4.8 Control Wiring

• Isolate the control wiring from the high-powercomponents in the frequency converter.

• When the frequency converter is connected to athermistor, ensure that the thermistor controlwiring is screened and reinforced/doubleinsulated. A 24 V DC supply voltage isrecommended. See Illustration 4.7.

4.8.1 Control Terminal Types

Illustration 4.7 and Illustration 4.8 show the removablefrequency converter connectors. Terminal functions anddefault settings are summarised in Table 4.2 and Table 4.3.

23

4

1

130B

B921

.11

Illustration 4.7 Control Terminal Locations



4 4

12 13 18 19 27 29 32 33 20 37

39 42 50 53 54 5561 68 69

130B

B931

.101

2 3

Illustration 4.8 Terminal Numbers

• Connector 1 provides 4 programmable digitalinputs terminals, 2 additional digital terminalsprogrammable as either input or output, a 24 VDC terminal supply voltage, and a common foroptional customer supplied 24 V DC voltage. FC302 and FC 301 (optional in A1 enclosure) alsoprovide a digital input for STO function.

• Connector 2 terminals (+)68 and (-)69 for RS485serial communication connection.

• Connector 3 provides 2 analog inputs, 1 analogoutput, 10 V DC supply voltage, and commonsfor the inputs and output.

• Connector 4 is a USB port available for use withthe MCT 10 Set-up Software.

Terminal description

Terminal ParameterDefaultsetting Description

Digital inputs/outputs

12, 13 – +24 V DC 24 V DC supplyvoltage for digitalinputs and externaltransducers. Maximumoutput current 200mA (130 mA for FC301) for all 24 V loads.

18 5-10 [8] Start

Digital inputs.

19 5-11 [10] Reversing

32 5-14 [0] Nooperation


27 5-12 [2] Coastinverse

For digital input oroutput. Default settingis input.29 5-13 [14] JOG

20 – – Common for digitalinputs and 0 Vpotential for 24 Vsupply.

37 – STO Safe input.

Analog inputs/outputs

39 –

Common for analogoutput




Programmable analogoutput. 0–20 mA or4–20 mA at a

maximum of 500 Ω.50 – +10 V DC 10 V DC analog

supply voltage forpotentiometer orthermistor. 15 mAmaximum.

53 6-1* Reference Analog input. Forvoltage or current.Switches A53 and A54select mA or V.

54 6-2* Feedback

55 ––

Common for analoginput.

Table 4.2 Terminal Description, Digital Inputs/Outputs, AnalogInputs/Outputs



Serial communication

61 – – Integrated RC-filter forcable screen. ONLY forconnecting the screenin the event of EMCproblems.

68 (+) 8-3* – RS485 interface. Acontrol card switch isprovided fortermination resistance.

69 (-) 8-3* –

Relays

01, 02, 03 5-40 [0][0] Nooperation

Form C relay output.For AC or DC voltageand resistive orinductive loads.

04, 05, 06 5-40 [1] [0] Nooperation

Table 4.3 Terminal Description, Serial Communication

Additional terminal

• 2 form C relay outputs. The location of theoutputs depends on the frequency converterconfiguration.

• Terminals located on built-in optional equipment.See the manual provided with the equipmentoption.



44

4.8.2 Wiring to Control Terminals

Control terminal connectors can be unplugged from thefrequency converter for ease of installation, as shown inIllustration 4.9.

NOTICEKeep control wires as short as possible and separatefrom high-power cables to minimise interference.

1. Open the contact by inserting a small screwdriverinto the slot above the contact and push thescrewdriver slightly upwards.

130B

D54

6.11

21

10 m

m[0

.4 in

ches

]

12 13 18 19 27 29 32 33

Illustration 4.9 Connecting Control Wires

2. Insert the bare control wire into the contact.

3. Remove the screwdriver to fasten the control wireinto the contact.

4. Ensure that the contact is firmly established andnot loose. Loose control wiring can be the sourceof equipment faults or less than optimaloperation.

See chapter 8.5 Cable Specifications for control terminalwiring sizes and chapter 6 Application Set-up Examples fortypical control wiring connections.

4.8.3 Enabling Motor Operation(Terminal 27)

A jumper wire is required between terminal 12 (or 13) andterminal 27 for the frequency converter to operate whenusing factory default programming values.

• Digital input terminal 27 is designed to receive 24V DC external interlock command.

• When no interlock device is used, wire a jumperbetween control terminal 12 (recommended) or13 to terminal 27. The jumper provides aninternal 24 V signal on terminal 27.

• When the status line at the bottom of the LCPreads AUTO REMOTE COAST, it indicates that theunit is ready to operate but is missing an inputsignal on terminal 27.

• When factory installed optional equipment iswired to terminal 27, do not remove that wiring.

4.8.4 Voltage/Current Input Selection(Switches)

The analog input terminals 53 and 54 allow setting ofinput signal to voltage (0–10 V) or current (0/4–20 mA).

Default parameter setting:• Terminal 53: Speed reference signal in open loop

(see parameter 16-61 Terminal 53 Switch Setting).

• Terminal 54: Feedback signal in closed loop (seeparameter 16-63 Terminal 54 Switch Setting).

NOTICEDisconnect power to the frequency converter beforechanging switch positions.

1. Remove the LCP (see Illustration 4.10).

2. Remove any optional equipment covering theswitches.

3. Set switches A53 and A54 to select the signaltype. U selects voltage, I selects current.

130B

D53

0.10

12

N

O

VLT

BUSTER.OFF-ON

A53 A54U- I U- I

Illustration 4.10 Location of Terminal 53 and 54 Switches

To run STO, additional wiring for the frequency converter isrequired. Refer to VLT® Frequency Converters Safe Torque OffOperating Instructions for further information.



4 4

4.8.5 Mechanical Brake Control

In hoisting/lowering applications, it is necessary tocontrol an electro-mechanical brake.

• Control the brake using any relay output ordigital output (terminal 27 or 29).

• Keep the output closed (voltage-free) as long asthe frequency converter is unable to keep themotor at standstill, for example due to the loadbeing too heavy.

• Select [32] Mechanical brake control in parametergroup 5-4* Relays for applications with an electro-mechanical brake.

• The brake is released when the motor currentexceeds the value in parameter 2-20 Release BrakeCurrent.

• The brake is engaged when the output frequencyis less than the frequency set inparameter 2-21 Activate Brake Speed [RPM] orparameter 2-22 Activate Brake Speed [Hz], and onlyif the frequency converter carries out a stopcommand.

If the frequency converter is in alarm mode or in anovervoltage situation, the mechanical brake immediatelycloses.

NOTICEThe frequency converter is not a safety device. It is theresponsibility of the system designer to integrate safetydevices according to relevant national crane/liftregulations.

130B

A90

2.10

L1 L2 L3

U V W

02 01

A1

A2

Frequency converterOutput

relay

Command circuit220 V AC

Mechanicalbrake

ShaftMotor

Frewheelingdiode

Brake380 V AC

Outputcontactorinput

power circuit

Illustration 4.11 Connecting the Mechanical Brake to theFrequency Converter

4.8.6 RS485 Serial Communication

Connect RS485 serial communication wiring to terminals(+)68 and (-)69.

• Use screened serial communication cable(recommended).

• See chapter 4.3 Grounding for proper grounding.

61

68

69

+

130B

B489

.10

RS-485

Illustration 4.12 Serial Communication Wiring Diagram

For basic serial communication set-up, select the following:

1. Protocol type in parameter 8-30 Protocol.

2. Frequency converter address inparameter 8-31 Address.

3. Baud rate in parameter 8-32 Baud Rate.

• 2 communication protocols are internal to thefrequency converter:

- Danfoss FC.

- Modbus RTU

• Functions can be programmed remotely usingthe protocol software and RS485 connection or inparameter group 8-** Communications andOptions.

• Selecting a specific communication protocolchanges various default parameter settings tomatch that protocol’s specifications and makesadditional protocol-specific parameters available.

• Option cards for the frequency converter areavailable to provide additional communicationprotocols. See the option card documentation forinstallation and operation instructions.



44

4.9 Installation Check List

Before completing installation of the unit, inspect the entire installation as detailed in Table 4.4. Check and mark the itemswhen completed.

Inspect for Description ☑Auxiliary equipment • Look for auxiliary equipment, switches, disconnects, or input fuses/circuit breakers, residing on the input

power side of the frequency converter, or output side to the motor. Ensure that they are ready for full-speed operation.

• Check the function and installation of any sensors used for feedback to the frequency converter.• Remove any power factor correction caps on the motor.• Adjust any power factor correction caps on the mains side and ensure that they are dampened.

Cable routing • Ensure that the motor wiring and control wiring are separated, screened, or in 3 separate metallic conduitsfor high frequency interference isolation.

Control wiring • Check for broken or damaged wires and loose connections.• Check that the control wiring is isolated from power and motor wiring for noise immunity.• Check the voltage source of the signals, if necessary.

The use of screened cable or twisted pair is recommended. Ensure that the screen is terminated correctly.

Cooling clearance • Ensure that the top and bottom clearance is adequate to ensure proper air flow for cooling, see chapter 3.3 Mounting.

Ambient conditions • Check that requirements for ambient conditions are met. Fusing and circuitbreakers

• Check for proper fusing or circuit breakers.• Check that all fuses are inserted firmly and are in operational condition, and that all circuit breakers are in

the open position.

Grounding • Check for sufficient ground connections and ensure that those connections are tight and free of oxidation.• Grounding to conduit, or mounting the back panel to a metal surface, is not a suitable grounding.

Input and outputpower wiring

• Check for loose connections.• Check that the motor and mains cables are in separate conduit or separated screened cables.

Panel interior • Inspect that the unit interior is free of dirt, metal chips, moisture, and corrosion.• Check that the unit is mounted on an unpainted, metal surface.

Switches • Ensure that all switch and disconnect settings are in the proper positions. Vibration • Check that the unit is mounted solidly, or that shock mounts are used, as necessary.

• Check for an unusual amount of vibration.

Table 4.4 Installation Check List

CAUTIONPOTENTIAL HAZARD IN THE EVENT OF INTERNAL FAILURERisk of personal injury if the frequency converter is not properly closed.

• Before applying power, ensure that all safety covers are in place and securely fastened.



4 4

5 Commissioning

5.1 Safety Instructions

See chapter 2 Safety for general safety instructions.

WARNINGHIGH VOLTAGEFrequency converters contain high voltage whenconnected to AC mains input power. Failure to performinstallation, start-up, and maintenance by qualifiedpersonnel could result in death or serious injury.

• Installation, start-up, and maintenance must beperformed by qualified personnel only.

Before applying power:1. Close the cover properly.

2. Check that all cable glands are firmly tightened.

3. Ensure that input power to the unit is off andlocked out. Do not rely on the frequencyconverter disconnect switches for input powerisolation.

4. Verify that there is no voltage on input terminalsL1 (91), L2 (92), and L3 (93), phase-to-phase, andphase-to-ground.

5. Verify that there is no voltage on outputterminals 96 (U), 97 (V), and 98 (W), phase-to-phase, and phase-to-ground.

6. Confirm continuity of the motor by measuring Ωvalues on U–V (96–97), V–W (97–98), and W–U(98–96).

7. Check for proper grounding of the frequencyconverter as well as the motor.

8. Inspect the frequency converter for looseconnections on the terminals.

9. Confirm that the supply voltage matches thevoltage of the frequency converter and themotor.

5.2 Applying Power

Apply power to the frequency converter using thefollowing steps:

1. Confirm that the input voltage is balanced within3%. If not, correct the input voltage imbalancebefore proceeding. Repeat this procedure afterthe voltage correction.

2. Ensure that any optional equipment wiringmatches the installation application.

3. Ensure that all operator devices are in the OFFposition. Panel doors must be closed and coverssecurely fastened.

4. Apply power to the unit. Do not start thefrequency converter now. For units with adisconnect switch, turn it to the ON position toapply power to the frequency converter.

5.3 Local Control Panel Operation

The local control panel (LCP) is the combined display andkeypad on the front of the unit.

The LCP has several user functions:

• Start, stop, and control speed when in localcontrol.

• Show operational data, status, warnings, andcautions.

• Programme frequency converter functions. • Manually reset the frequency converter after a

fault when auto reset is inactive.

An optional numeric LCP (NLCP) is also available. The NLCPoperates in a manner similar to the LCP. See the productrelevant programming guide for details on use of the NLCP.

NOTICEFor commissioning via PC, install the MCT 10 Set-upSoftware. The software is available for download (basicversion) or for ordering (advanced version, code number130B1000). For more information and downloads, seewww.danfoss.com/BusinessAreas/DrivesSolutions/Software+MCT10/MCT10+Downloads.htm.

NOTICEDuring start-up, the LCP shows the message INITIALISING.When this message is no longer shown, the frequencyconverter is ready for operation. Adding or removingoptions can extend the duration of start-up.

5.3.1 Graphic Local Control Panel Layout

The graphic local control panel (GLCP) is divided into 4functional groups (see Illustration 5.1).

A. Display area.

B. Display menu keys.

C. Navigation keys and indicator lights.

D. Operation keys and reset.

Commissioning VLT® AutomationDrive FC 301/302


55

http://www.danfoss.com/BusinessAreas/DrivesSolutions/Software+MCT10/MCT10+Downloads.htmhttp://www.danfoss.com/BusinessAreas/DrivesSolutions/Software+MCT10/MCT10+Downloads.htm

130B

D59

8.10

Autoon

ResetHandon

Off

StatusQuickMenu

MainMenu

AlarmLog

Back

CancelInfoOK

Status 1(1)36.4 kW

Auto Remote Ramping

0.000

On

Alarm

Warn.

A

7.83 A799 RPM

B

C

D

53.2 %

1

2

3

4

5

6

78

9

10

11

12

13

14

15

16

17

18 19 20 21

Illustration 5.1 GLCP

A. Display areaThe display area is activated when the frequency converterreceives power from the mains voltage, a DC bus terminal,or a 24 V DC external supply.

The information shown on the LCP can be customised foruser application. Select options in the Quick Menu Q3-13Display Settings.

Display Parameter number Default setting

1 0-20 [1617] Speed [RPM]

2 0-21 [1614] Motor Current

3 0-22 [1610] Power [kW]

4 0-23 [1613] Frequency

5 0-24 [1602] Reference %

Table 5.1 Legend to Illustration 5.1, Display Area

B. Display menu keysMenu keys are used for menu access for parameter set-up,toggling through status display modes during normaloperation, and viewing fault log data.

Key Function

6 Status Shows operational information.

7 Quick Menu Allows access to programming parametersfor initial set-up instructions and manydetailed application instructions.

Key Function

8 Main Menu Allows access to all programmingparameters.

9 Alarm Log Shows a list of current warnings, the last10 alarms, and the maintenance log.

Table 5.2 Legend to Illustration 5.1, Display Menu Keys

C. Navigation keys and indicator lights (LEDs)Navigation keys are used for programming functions andmoving the display cursor. The navigation keys alsoprovide speed control in local operation. There are also 3frequency converter status indicator lights in this area.

Key Function

10 Back Reverts to the previous step or list in themenu structure.

11 Cancel Cancels the last change or command as longas the display mode is not changed.

12 Info Press for a definition of the function beingshowed.

13 NavigationKeys

Use the 4 navigation keys to move betweenitems in the menu.

14 OK Use to access parameter groups or to enablea selection.

Table 5.3 Legend to Illustration 5.1, Navigation Keys

Indicator Colour Function

15 On Green The ON indicator light activateswhen the frequency converterreceives power from the mainsvoltage, a DC bus terminal, or a 24V external supply.

16 Warn Yellow When warning conditions are met,the yellow WARN indicator lightcomes on and text appears in thedisplay area identifying theproblem.

17 Alarm Red A fault condition causes the redalarm light to flash and an alarmtext is showed.

Table 5.4 Legend to Illustration 5.1, Indicator Lights (LEDs)

Commissioning Operating Instructions


5 5

D. Operation keys and resetOperation keys are located at the bottom of the LCP.

Key Function

18 Hand On Starts the frequency converter in localcontrol.

• An external stop signal by control inputor serial communication overrides thelocal hand on.

19 Off Stops the motor but does not remove powerto the frequency converter.

20 Auto On Puts the system in remote operational mode.

• Responds to an external start commandby control terminals or serial communi-cation.

21 Reset Resets the frequency converter manuallyafter a fault has been cleared.

Table 5.5 Legend to Illustration 5.1, Operation Keys and Reset

NOTICEThe display contrast can be adjusted by pressing [Status]and the [▲]/[▼] keys.

5.3.2 Parameter Settings

Establishing the correct programming for applicationsoften requires setting functions in several relatedparameters. Details for parameters are provided in chapter 9.2 Parameter Menu Structure.

Programming data is stored internally in the frequencyconverter.

• For back-up, upload data into the LCP memory.• To download data to another frequency

converter, connect the LCP to that unit anddownload the stored settings.

• Restoring factory default settings does notchange data stored in the LCP memory.

5.3.3 Uploading/Downloading Data to/fromthe LCP

1. Press [Off] to stop the motor before uploading ordownloading data.

2. Press [Main Menu], select parameter 0-50 LCP Copyand press [OK].

3. Select [1] All to LCP to upload data to the LCP orselect [2] All from LCP to download data from theLCP.

4. Press [OK]. A progress bar shows the uploading ordownloading progress.

5. Press [Hand On] or [Auto On] to return to normaloperation.

5.3.4 Changing Parameter Settings

Access and change parameter settings from the QuickMenu or from the Main Menu. The Quick Menu only givesaccess to a limited number of parameters.

1. Press [Quick Menu] or [Main Menu] on the LCP.

2. Press [▲] [▼] to browse through the parametergroups, press [OK] to select a parameter group.

3. Press [▲] [▼] to browse through the parameters,press [OK] to select a parameter.

4. Press [▲] [▼] to change the value of a parametersetting.

5. Press [◄] [►] to shift digit when a decimalparameter is in the editing state.

6. Press [OK] to accept the change.

7. Press either [Back] twice to enter Status, or press[Main Menu] once to enter the Main Menu.

View changesQuick Menu Q5 - Changes Made lists all parameterschanged from default settings.

• The list only shows parameters, which arechanged in the current edit set-up.

• Parameters, which were reset to default values,are not listed.

• The message Empty indicates that no parametersare changed.

5.3.5 Restoring Default Settings

NOTICERisk of losing programming, motor data, localisation, andmonitoring records by restoration of default settings. Toprovide a back-up, upload data to the LCP before initiali-sation.

Restoring the default parameter settings is done by initiali-sation of the frequency converter. Initialisation is carriedout through parameter 14-22 Operation Mode(recommended) or manually.

• Initialisation using parameter 14-22 OperationMode does not reset frequency converter settings,such as operating hours, serial communicationselections, personal menu settings, fault log,alarm log, and other monitoring functions.

• Manual initialisation erases all motor,programming, localisation, and monitoring dataand restores factory default settings.



55

Recommended initialisation procedure, viaparameter 14-22 Operation Mode

1. Press [Main Menu] twice to access parameters.

2. Scroll to parameter 14-22 Operation Mode andpress [OK].

3. Scroll to [2] Initialisation and press [OK].

4. Remove power to the unit and wait for thedisplay to turn off.

5. Apply power to the unit.

Default parameter settings are restored during start-up.This may take slightly longer than normal.

6. Alarm 80, Drive initialised to default value isshowed.

7. Press [Reset] to return to operation mode.

Manual initialisation procedure

1. Remove power to the unit and wait for thedisplay to turn off.

2. Press and hold [Status], [Main Menu], and [OK] atthe same time while applying power to the unit(approximately 5 s or until audible click and fanstarts).

Factory default parameter settings are restored duringstart-up. This may take slightly longer than usual.

Manual initialisation does not reset the following frequencyconverter information:

• Parameter 15-00 Operating hours.• Parameter 15-03 Power Up's.• Parameter 15-04 Over Temp's.• Parameter 15-05 Over Volt's.

5.4 Basic Programming

5.4.1 Commissioning with SmartStart

The SmartStart wizard enables fast configuration of basicmotor and application parameters.

• SmartStart starts automatically at first power-upor after initialisation of the frequency converter.

• Follow the on-screen instructions to complete thecommissioning of the frequency converter.Always reactivate SmartStart by selecting QuickMenu Q4 - SmartStart.

• For commissioning without use of the SmartStartwizard, refer to chapter 5.4.2 Commissioning via[Main Menu] or the programming guide.

NOTICEMotor data is required for the SmartStart set-up. Therequired data is normally available on the motornameplate.

5.4.2 Commissioning via [Main Menu]

Recommended parameter settings are intended for start-up and check-out purposes. Application settings may vary.

Enter data with power ON, but before operating thefrequency converter.

1. Press [Main Menu] on the LCP.

2. Press the navigation keys to scroll to parametergroup 0-** Operation/Display and press [OK].

130B

P066

.10

1107 RPM

0 - ** Operation/Display

1 - ** Load/Motor

2 - ** Brakes

3 - ** Reference / Ramps

3.84 A 1 (1)

Main Menu

Illustration 5.2 Main Menu

3. Press the navigation keys to scroll to parametergroup 0-0* Basic Settings and press [OK].

0-**Operation / Display0.0%

0-0* Basic Settings0-1* Set-up Operations0-2* LCP Display0-3* LCP Custom Readout

0.00A 1(1)

130B

P087

.10

Illustration 5.3 Operation/Display

4. Press the navigation keys to scroll toparameter 0-03 Regional Settings and press [OK].

0-0*Basic Settings0.0%

0-03 Regional Settings

[0] International

0.00A 1(1)

130B

P088

.10

Illustration 5.4 Basic Settings

5. Press the navigation keys to select [0] Interna-tional or [1] North America as appropriate and



5 5

press [OK]. (This changes the default settings fora number of basic parameters).

6. Press [Main Menu] on the LCP.

7. Press the navigation keys to scroll toparameter 0-01 Language.

8. Select the language and press [OK].

9. If a jumper wire is in place between controlterminals 12 and 27, leaveparameter 5-12 Terminal 27 Digital Input at factorydefault. Otherwise, select [0] No Operation inparameter 5-12 Terminal 27 Digital Input.

10. Make the application-specific settings in thefollowing parameters:

10a Parameter 3-02 Minimum Reference.

10b Parameter 3-03 Maximum Reference.

10c Parameter 3-41 Ramp 1 Ramp Up Time.

10d Parameter 3-42 Ramp 1 Ramp DownTime.

10e Parameter 3-13 Reference Site. Linked toHand/Auto Local Remote.

5.4.3 Asynchronous Motor Set-up

Enter the following motor data. Find the information onthe motor nameplate.

1. Parameter 1-20 Motor Power [kW] orparameter 1-21 Motor Power [HP].

2. Parameter 1-22 Motor Voltage.

3. Parameter 1-23 Motor Frequency.

4. Parameter 1-24 Motor Current.

5. Parameter 1-25 Motor Nominal Speed.

When running in flux control principle, or for optimumperformance in VVC+ mode, extra motor data is required toset up the following parameters. Find the data in themotor datasheet (this data is typically not available on themotor nameplate). Run a complete automatic motoradaptation (AMA) using parameter 1-29 Automatic MotorAdaptation (AMA) [1] Enable Complete AMA or enter theparameters manually. Parameter 1-36 Iron Loss Resistance(Rfe) is always entered manually.

1. Parameter 1-30 Stator Resistance (Rs).

2. Parameter 1-31 Rotor Resistance (Rr).

3. Parameter 1-33 Stator Leakage Reactance (X1).

4. Parameter 1-34 Rotor Leakage Reactance (X2).

5. Parameter 1-35 Main Reactance (Xh).

6. Parameter 1-36 Iron Loss Resistance (Rfe).

Application-specific adjustment when running VVC+

VVC+ is the most robust control mode. In most situations,it provides optimum performance without furtheradjustments. Run a complete AMA for best performance.

Application-specific adjustment when running fluxFlux control principle is the preferred control principle foroptimum shaft performance in dynamic applications.Perform an AMA since this control mode requires precisemotor data. Depending on the application, furtheradjustments may be required.

See Table 5.6 for application-related recommendations.

Application Settings

Low-inertia applications Keep calculated values.

High-inertia applications Parameter 1-66 Min. Current at LowSpeed.Increase current to a value betweendefault and maximum depending onthe application.Set ramp times matching theapplication. Too fast ramp up causesan overcurrent or overtorque. Toofast ramp down causes anovervoltage trip.

High load at low speed Parameter 1-66 Min. Current at LowSpeed.Increase current to a value betweendefault and maximum depending onthe application.

No-load application Adjust parameter 1-18 Min. Current atNo Load to achieve smoother motoroperation by reducing torque rippleand vibration.

Flux sensorless controlprinciple only

Adjust parameter 1-53 Model ShiftFrequency.Example 1: If the motor oscillates at5 Hz, and dynamics performance isrequired at 15 Hz, setparameter 1-53 Model Shift Frequencyto 10 Hz.Example 2: If the applicationinvolves dynamic load changes atlow speed, reduceparameter 1-53 Model Shift Frequency.Observe the motor behaviour tomake sure that the model shiftfrequency is not reduced too much.Symptoms of inappropriate modelshift frequency are motor oscillationsor frequency converter tripping.

Table 5.6 Recommendations for Flux Applications



55

5.4.4 PM Motor Set-up

NOTICEValid for FC 302 only.

This section describes how to set up a PM motor.

Initial programming stepsTo activate PM motor operation, select [1] PM, non-salientSPM in parameter 1-10 Motor Construction.

Programming motor dataAfter selecting a PM motor, the PM motor-relatedparameters in parameter groups 1-2* Motor Data, 1-3* Adv.Motor Data, and 1-4* Adv. Motor Data II are active.The necessary data can be found on the motor nameplateand on the motor datasheet.Program the following parameters in the order listed:



3. Parameter 1-26 Motor Cont. Rated Torque.

4. Parameter 1-39 Motor Poles.

Run a complete AMA using parameter 1-29 AutomaticMotor Adaptation (AMA) [1] Enable Complete AMA. If acomplete AMA is not performed, configure the followingparameters manually:

1. Parameter 1-30 Stator Resistance (Rs)Enter the line-to-common stator windingresistance (Rs). If only line-line data is available,divide the line-line value by 2 to get the line-common value.

2. Parameter 1-37 d-axis Inductance (Ld)Enter the line-to-common direct axis inductanceof the PM motor.If only line-line data is available, divide the line-line value by 2 to get the line-common value.

3. Parameter 1-40 Back EMF at 1000 RPM.Enter the line-to-line back EMF of the PM Motorat 1000 RPM (RMS value). Back EMF is the voltagegenerated by a PM motor when no frequencyconverter is connected and the shaft is turnedexternally. It is normally specified for nominalmotor speed or for 1000 RPM measured between2 lines. If the value is not available for a motorspeed of 1000 RPM, calculate the correct value asfollows:If back EMF is, for example, 320 V at 1800 RPM, itcan be calculated at 1000 RPM as follows:Back EMF = (Voltage/RPM)x1000 =(320/1800)x1000 = 178.

Test motor operation

1. Start the motor at low speed (100–200 RPM). Ifthe motor does not turn, check the installation,general programming, and motor data.

2. Check if the start function in parameter 1-70 PMStart Mode fits the application requirements.

Rotor detectionThis function is the recommended selection forapplications where the motor starts from standstill, forexample pumps or conveyors. On some motors, a sound isheard when the frequency converter performs the rotordetection. This does not harm the motor.

ParkingThis function is the recommended selection forapplications where the motor is rotating at slow speed, forexample windmilling in fan applications.Parameter 2-06 Parking Current and parameter 2-07 ParkingTime can be adjusted. Increase the factory setting of theseparameters for applications with high inertia.

Application-specific adjustment when running VVC+

VVC+ is the most robust control mode. In most situations,it provides optimum performance without furtheradjustments. Run a complete AMA for best performance.

Start the motor at nominal speed. If the application doesnot run well, check the VVC+ PM settings. Table 5.7contains recommendations for various applications.


Low-inertia applicationsILoad/IMotor5

Keep the default values.

High-inertia applicationsILoad/IMotor>50

Increase parameter 1-14 DampingGain, parameter 1-15 Low Speed FilterTime Const., and parameter 1-16 HighSpeed Filter Time Const.

High load at low speed

If the motor starts oscillating at a certain speed, increaseparameter 1-14 Damping Gain. Increase the value in smallsteps. Depending on the motor, this parameter can be setto 10–100% higher than the default value.

Application-specific adjustment when running fluxFlux control principle is the preferred control principle foroptimum shaft performance in dynamic applications.Perform an AMA because this control mode requiresprecise motor data. Depending on the application, furtheradjustments may be required.See chapter 5.4.3 Asynchronous Motor Set-up for application-specific recommendations.

5.4.5 SynRM Motor Set-up with VVC+

This section describes how to set up a SynRM motor withVVC+.

NOTICEThe SmartStart wizard covers the basic configuration ofSynRM motors.

Initial programming stepsTo activate SynRM motor operation, select [5] Sync.Reluctance in parameter 1-10 Motor Construction.

Programming motor dataAfter performing the initial programming steps, the SynRMmotor-related parameters in parameter groups 1-2* MotorData, 1-3* Adv. Motor Data, and 1-4* Adv. Motor Data II areactive. Use the motor nameplate data and the motordatasheet to programme the following parameters in theorder listed:

1. Parameter 1-23 Motor Frequency.



4. Parameter 1-26 Motor Cont. Rated Torque.

Run a complete AMA using parameter 1-29 AutomaticMotor Adaptation (AMA) [1] Enable Complete AMA or enterthe following parameters manually:

1. Parameter 1-30 Stator Resistance (Rs).

2. Parameter 1-37 d-axis Inductance (Ld).

3. Parameter 1-44 d-axis Inductance Sat. (LdSat).

4. Parameter 1-45 q-axis Inductance Sat. (LqSat).

5. Parameter 1-48 Inductance Sat. Point.

Application-specific adjustmentsStart the motor at nominal speed. If the application doesnot run well, check the VVC+ SynRM settings. Table 5.8provides application-specific recommendations:


Low-inertia applicationsILoad/IMotor5

Keep the default values.

High-inertia applicationsILoad/IMotor>50

Increase parameter 1-14 DampingGain, parameter 1-15 Low Speed FilterTime Const., and parameter 1-16 HighSpeed Filter Time Const.

High-load at low speed

5.4.6 Automatic Motor Adaptation (AMA)

AMA is a procedure which optimises compatibility betweenthe frequency converter and the motor.

• The frequency converter builds a mathematicalmodel of the motor for regulating output motorcurrent. The procedure also tests the input phasebalance of electrical power. It compares themotor characteristics with the entered nameplatedata.

• The motor shaft does not turn and no harm isdone to the motor while running the AMA.

• Some motors may be unable to run the completeversion of the test. In that case, select [2] Enablereduced AMA.

• If an output filter is connected to the motor,select [2] Enable reduced AMA.

• If warnings or alarms occur, see chapter 7.4 List ofWarnings and Alarms.

• Run this procedure on a cold motor for bestresults.

To run AMA1. Press [Main Menu] to access parameters.

2. Scroll to parameter group 1-** Load and Motorand press [OK].

3. Scroll to parameter group 1-2* Motor Data andpress [OK].

4. Scroll to parameter 1-29 Automatic MotorAdaptation (AMA) and press [OK].

5. Select [1] Enable complete AMA and press [OK].

6. Follow the on-screen instructions.

7. The test runs automatically and indicates when itis complete.

8. The advanced motor data is entered in parametergroup 1-3* Adv. Motor Data.

5.5 Checking Motor Rotation

Before running the frequency converter, check the motorrotation.

1. Press [Hand On].

2. Press [►] for positive speed reference.

3. Check that the speed displayed is positive.

When parameter 1-06 Clockwise Direction is set to [0]Normal (default clockwise):

4a. Verify that the motor turns clockwise.

5a. Verify that the LCP direction arrow isclockwise.

When parameter 1-06 Clockwise Direction is set to [1] Inverse(counterclockwise):

4b. Verify that the motor turns counter-clockwise.

5b. Verify that the LCP direction arrow is counter-clockwise.

5.6 Checking Encoder Rotation

Only check encoder rotation if encoder feedback is used.For more information on the encoder option, refer to theoption manual.

1. Select [0] Open Loop in parameter 1-00 Configu-ration Mode.

2. Select [1] 24 V encoder in parameter 7-00 SpeedPID Feedback Source.

3. Press [Hand On].

4. Press [►] for positive speed reference(parameter 1-06 Clockwise Direction at [0] Normal).

5. In parameter 16-57 Feedback [RPM], check that thefeedback is positive.

NOTICENEGATIVE FEEDBACKIf the feedback is negative, the encoder connection iswrong. Use either parameter 5-71 Term 32/33 EncoderDirection or parameter 17-60 Feedback Direction toinverse the direction, or reverse the encoder cables.Parameter 17-60 Feedback Direction is only available withthe VLT® Encoder Input MCB 102 option.

5.7 Local-control Test

1. Press [Hand On] to provide a local start commandto the frequency converter.

2. Accelerate the frequency converter by pressing[▲] to full speed. Moving the cursor left of thedecimal point provides quicker input changes.

3. Note any acceleration problems.

4. Press [Off]. Note any deceleration problems.

In the event of acceleration or deceleration problems, see chapter 7.5 Troubleshooting. See chapter 7.4 List of Warningsand Alarms for resetting the frequency converter after atrip.



5 5

5.8 System Start-up

The procedure in this section requires wiring andapplication programming to be completed. The followingprocedure is recommended after application set-up iscompleted.

1. Press [Auto On].

2. Apply an external run command.

3. Adjust the speed reference throughout the speedrange.

4. Remove the external run command.

5. Check the sound and vibration levels of themotor to ensure that the system is working asintended.

If warnings or alarms occur, see or chapter 7.4 List ofWarnings and Alarms.



55

6 Application Set-up Examples

The examples in this section are intended as a quickreference for common applications.

• Parameter settings are the regional default valuesunless otherwise indicated (selected inparameter 0-03 Regional Settings).

• Parameters associated with the terminals andtheir settings are shown next to the drawings.

• Required switch settings for analog terminals A53or A54 are also shown.

NOTICEWhen using the optional STO feature, a jumper wire maybe required between terminal 12 (or 13) and terminal 37for the frequency converter to operate with factorydefault programming values.

6.1 Application Examples

6.1.1 AMA

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B929

.10 Function Setting

Parameter 1-29 Automatic MotorAdaptation(AMA)

[1] EnablecompleteAMA

Parameter 5-12 Terminal 27Digital Input

[2] Coastinverse

Notes/comments:Set parameter group 1-2* MotorData according to the motor.D IN 37 is an option.

Table 6.1 AMA with T27 Connected

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B930


Parameter 1-29 Automatic MotorAdaptation(AMA)

[1] EnablecompleteAMA


[0] Nooperation

Notes/comments:Set parameter group 1-2* MotorData according to the motor.D IN 37 is an option.

Table 6.2 AMA without T27 Connected

6.1.2 Speed

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

A53

U - I

-10 - +10V

+

-

130B

B926


Parameter 6-10 Terminal 53 LowVoltage

0.07 V*

Parameter 6-11 Terminal 53 HighVoltage

10 V*

Parameter 6-14 Terminal 53 LowRef./Feedb. Value

0 Hz

Parameter 6-15 Terminal 53 HighRef./Feedb. Value

50 Hz

* = Default value

Notes/comments:D IN 37 is an option.

Table 6.3 Analog Speed Reference (Voltage)

Application Set-up Examples Operating Instructions


6 6

Parameters

130B

B927

.10

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 VA IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

A53

U - I

4 - 20mA

+

-

Function Setting

Parameter 6-12 Terminal 53 LowCurrent

4 mA*

Parameter 6-13 Terminal 53 HighCurrent

20 mA*


0 Hz


50 Hz

* = Default value


Table 6.4 Analog Speed Reference (Current)

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

A53

U - I

≈ 5kΩ

130B

B683


Parameter 6-10 Terminal 53 LowVoltage

0.07 V*

Parameter 6-11 Terminal 53 HighVoltage

10 V*


0 Hz


1500 Hz

* = Default value


Table 6.5 Speed Reference (Using a Manual Potentiometer)

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B804



[8] Start*


[19] FreezeReference


[21] Speed Up


[22] SpeedDown

* = Default value


Table 6.6 Speed Up/Down

Start (18)

Freeze ref (27)

Speed up (29 )

Speed down (32 )

Speed

Reference

130B

B840

.11

Illustration 6.1 Speed Up/Down

Application Set-up Examples VLT® AutomationDrive FC 301/302


66

6.1.3 Start/Stop

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B802



[8] Start


[0] Nooperation

Parameter 5-19 Terminal 37 SafeStop

[1] Safe StopAlarm

* = Default value

Notes/comments:If parameter 5-12 Terminal 27Digital Input is set to [0] Nooperation, a jumper wire toterminal 27 is not needed.D IN 37 is an option.

Table 6.7 Start/Stop Command with Safe Stop Option

130B

B805

.11

Speed

Start (18)

Illustration 6.2 Start/Stop Command with Safe Stop

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B803



[9] LatchedStart


[6] StopInverse

* = Default value

Notes/comments:If parameter 5-12 Terminal 27Digital Input is set to [0] Nooperation, a jumper wire toterminal 27 is not needed.D IN 37 is an option.

Table 6.8 Pulse Start/Stop

Speed

130B

B806

.10

Latched Start (18)

Stop Inverse (27)

Illustration 6.3 Latched Start/Stop Inverse



6 6

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B934


Parameter 5-10 Terminal 18 DigitalInput

[8] Start


[10]Reversing


[0] Nooperation


[16] Presetref bit 0


[17] Presetref bit 1

Parameter 3-10 Preset Reference

Preset reference 0Preset reference 1Preset reference 2Preset reference 3

25%50%75%100%

* = Default value


Table 6.9 Start/Stop with Reversing and 4 Preset Speeds

6.1.4 External Alarm Reset

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

130B

B928



[1] Reset

* = Default value


Table 6.10 External Alarm Reset

6.1.5 RS485

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

R1R2

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

01

02

03

04

05

06

-

616869

RS-485

+

130B

B685


Parameter 8-30 Protocol FC*

Parameter 8-31 Address

1*

Parameter 8-32 Baud Rate

9600*

* = Default value

Notes/comments:Select protocol, address, andbaud rate in the above-mentioned parameters.D IN 37 is an option.

Table 6.11 RS485 Network Connection



66

6.1.6 Motor Thermistor

WARNINGTHERMISTOR INSULATIONRisk of personal injury or equipment damage.

• Use only thermistors with reinforced or doubleinsulation to meet PELV insulationrequirements.

Parameters

130B

B686

.12

VLT

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

+10 VA IN

A IN

COM

A OUT

COM

12

13

18

19

20

27

29

32

33

50

53

54

55

42

39

A53

U - I

D IN 37

Function Setting

Parameter 1-90 Motor ThermalProtection

[2] Thermistortrip

Parameter 1-93 Thermistor Source

[1] Analoginput 53

* = Default Value

Notes/comments:If only a warning is required,set parameter 1-90 MotorThermal Protection to [1]Thermistor warning.D IN 37 is an option.

Table 6.12 Motor Thermistor

6.1.7 SLC

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

R1R2

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

01

02

03

04

05

06

130B

B839


Parameter 4-30 Motor Feedback LossFunction

[1] Warning

Parameter 4-31 Motor FeedbackSpeed Error

100 RPM

Parameter 4-32 Motor Feedback LossTimeout

5 s

Parameter 7-00 Speed PID FeedbackSource

[2] MCB 102

Parameter 17-11 Resolution (PPR)

1024*

Parameter 13-00 SL Controller Mode

[1] On

Parameter 13-01 Start Event

[19] Warning

Parameter 13-02 Stop Event

[44] Reset key

Parameter 13-10 ComparatorOperand

[21] Warningno.

Parameter 13-11 ComparatorOperator

[1] ≈*

Parameter 13-12 Comparator Value

90

Parameter 13-51 SL Controller Event

[22]Comparator0

Parameter 13-52 SL Controller Action

[32] Setdigital out Alow

Parameter 5-40 Function Relay

[80] SLdigital outputA

*=Default Value

Table 6.13 Using SLC to Set a Relay

Notes/comments:Exceeding the limit in the feedback monitor issues warning90, Feedback monitor. The SLC monitors warning 90,Feedback monitor, and if the warning becomes true, relay 1is triggered.External equipment indicates if service is required. If thefeedback error goes below the limit again within 5 s, thefrequency converter continues, and the warningdisappears. But relay 1 is still triggered until [Reset] ispressed on the LCP.



6 6

6.1.8 Mechanical Brake Control

Parameters

FC

+24 V

+24 V

D IN

D IN

D IN

COM

D IN

D IN

D IN

D IN

+10 V

A IN

A IN

COM

A OUT

COM

R1R2

12

13

18

19

20

27

29

32

33

37

50

53

54

55

42

39

01

02

03

04

05

06

130B

B841


Parameter 5-40 Function Relay

[32] Mech.brake ctrl.


[8] Start*


[11] Startreversing

Parameter 1-71 Start Delay

0.2

Parameter 1-72 Start Function

[5] VVC+/FLUXClockwise

Parameter 1-76 Start Current

Im,n

Parameter 2-20 Release BrakeCurrent

App.dependent

Parameter 2-21 Activate BrakeSpeed [RPM]

Half ofnominal slipof the motor

*=Default Value

Notes/comments:–

Table 6.14 Mechanical Brake Control

Start (18)

Start reversing (19)

Relay output

Speed

Time

Current

1-71 1-712-21 2-21

1-76

OpenClosed

130B

B842

.10

Illustration 6.4 Mechanical Brake Control



66

7 Maintenance, Diagnostics, and Troubleshooting

This chapter includes maintenance and service guidelines,status messages, warnings and alarms, and basic trouble-shooting.

7.1 Maintenance and Service

Under normal operating conditions and load profiles, thefrequency converter is maintenance-free throughout itsdesigned lifetime. To prevent breakdown, danger, anddamage, examine the frequency converter at regularintervals depending on the operating conditions. Replaceworn or damaged parts with original spare parts orstandard parts. For service and support, refer towww.danfoss.com/contact/sales_and_services/.

WARNINGUNINTENDED STARTWhen the frequency converter is connected to AC mains,DC supply, or load sharing, the motor may start at anytime. Unintended start during programming, service, orrepair work can result in death, serious injury, orproperty damage. The motor can start with an externalswitch, a fieldbus command, an input reference signalfrom the LCP or LOP, via remote operation using MCT 10Set-up Software, or after a cleared fault condition.To prevent unintended motor start:

• Disconnect the frequency converter from themains.

• Press [Off/Reset] on the LCP beforeprogramming parameters.

• Completely wire and assemble the frequencyconverter, motor, and any driven equipmentbefore connecting the frequency converter toAC mains, DC supply, or load sharing.

7.2 Status Messages

When the frequency converter is in Status mode, statusmessages are generated automatically and appear in thebottom line of the display (see Illustration 7.1).

Status799RPM 7.83A 36.4kW

0.000

53.2%

1(1)

AutoHandO�

RemoteLocal

RampingStopRunningJogging...Stand by

130B

B037

.11

1 2 3

1 Operating mode (see Table 7.1)

2 Reference site (see Table 7.2)

3 Operation status (see Table 7.3)

Illustration 7.1 Status Display

Table 7.1 to Table 7.3 describe the status messages shown.

Off The frequency converter does not react to anycontrol signal until [Auto On] or [Hand On] ispressed.

Auto On The frequency converter is controlled from thecontrol terminals and/or the serial communi-cation.

Hand On The frequency converter is controlled by thenavigation keys on the LCP. Stop commands,reset, reversing, DC brake, and other signalsapplied to the control terminals override localcontrol.

Table 7.1 Operating Mode

Remote The speed reference is given from externalsignals, serial communication, or internalpreset references.

Local The frequency converter uses [Hand On]control or reference values from the LCP.

Table 7.2 Reference Site

AC Brake [2] AC brake is selected in parameter 2-10 BrakeFunction. The AC brake overmagnetises themotor to achieve a controlled slow down.

AMA finish OK AMA was carried out successfully.

AMA ready AMA is ready to start. Press [Hand On] to start.

AMA running AMA process is in progress.

Braking The brake chopper is in operation. Generativeenergy is absorbed by the brake resistor.

Maintenance, Diagnostics, a... Operating Instructions


7 7

http://www.danfoss.com/contact/sales_and_services/

Braking max. The brake chopper is in operation. The powerlimit for the brake resistor defined inparameter 2-12 Brake Power Limit (kW) hasbeen reached.

Coast • Coast inverse was selected as a function fora digital input (parameter group 5-1*Digital Inputs). The corresponding terminalis not connected.

• Coast activated by serial communication.Ctrl. ramp-down [1] Control Ramp-down was selected in

parameter 14-10 Mains Failure.

• The mains voltage is below the value setin param

Documents

Operating Instructions VLT AutomationDrive FC 301/302 0.25 ......VLT® is a registered trademark. 1.2 Additional Resources Other resources are available to understand advanced frequency